The morning after strolling the NYC streets arm-in-arm with beau John Mayer, Jennifer Aniston popped by CBS' The Early Show, where she opened up on aging.

"It's my time," Aniston, 39, told co-anchor Harry Smith. "I just feel like, you know, every woman that's ever said -- or man -- that's said it just gets better. I just agree. She added, "You don't know as much as you know in your 20s as you do in your 30s as you do when you are..." "I'm startin' to live," she added. "It's good!"

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Asked about her nearly naked January GQ cover, Aniston remarked, "It's funny. I mean, I honestly see it as a different person. It's just -- well, because the headlines are just outrageous, so you usually get a kick out of that. But you just kind of go -- you try to walk past it as fast as you possibly can, honestly."

Watch Jennifer Aniston give David Letterman the same time from her naked GQ shoot.

Although she recently complained that her personal life is "none of people's "(expletive) business," she said she doesn't mind people gawking at her. Said the star, "It's amazing how you can sort of start to tune them out."

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As for her new movie Marley & Me (out Dec. 25), she said it was "so nice" not starring in "your normal romantic comedy, where it's about getting the guy or getting the girl. "At the end when they walk off into the sunset ... you get to actually tell the story," she said of the doggy drama. Aniston added that she and co-star Owen Wilson "had a great time.

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"It was easy from the minute we met. We just had ... very similar sensibilities," she explained. "He's just so good."

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